CN105126203A

CN105126203A - Injection device

Info

Publication number: CN105126203A
Application number: CN201510034446.0A
Authority: CN
Inventors: H.贝赫托尔德
Original assignee: Haselmeier AG
Current assignee: Medmis Switzerland Ag
Priority date: 2012-02-10
Filing date: 2013-02-06
Publication date: 2015-12-09
Anticipated expiration: 2033-02-06
Also published as: DE202012001411U1; CN104220117A; WO2013117332A1; CN105126203B; RU2615122C2; MX2014009123A; RU2014134275A; MX344115B; BR112014014902A2; BR112014014902B1

Abstract

An injection device (1) has a housing (2) in which a seat is formed for a container (5) with injection liquid. The injection device (1) has a control knob (8) for setting an amount of injection liquid to be forced out of the container (5). The control knob (8) is rotatable for this purpose. During the rotation, the control knob (8) moves in the direction of a longitudinal centre axis (6) of the injection device (1) in a distal direction relative to the housing (2). To force injection liquid out of the container (5), the control knob (8) is moved in the direction of the longitudinal centre axis (6) in the proximal direction of the injection device (1). When setting the amount of injection liquid to be forced out, the control knob (8) can be adjusted to at least one injection position (100), in which an admissible amount of injection liquid is set, and to at least one blocking position (10), in which an inadmissible amount of injection liquid is set. In the injection position (100), the control knob (8) is movable in the direction of the longitudinal centre axis (6) in the proximal direction. To avoid the injection of an inadmissible amount of injection liquid, provision is made that, in the blocking position (101), the movement of the control knob (8) is blocked in the direction of the longitudinal centre axis (6) in the proximal direction.

Description

Syringe

Technical field

The present invention relates to the syringe of the type illustrated in the preamble of claim 1.

Background technology

By the known a kind of syringe of document DE102007026083A1, in order to set amount of liquid to be injected, action button is rotated wherein.By rotating operation button, the side in the distally of action button towards syringe together with shot sleeve moves upward.Action button has buckling and locking device, and it guarantees to adjust in the position that action button only can structurally be subscribed.The setting in centre position can not realize due to the elastic wall of buckling and locking device.In order to extrude injecting fluid, action button side is proximally moved up.

In order to action button from centre position automatically and reliably jump to latched position, kayser is sufficiently firm, and the latched position of radial direction must be adjacent enough near.But the torque that the intensity effect operator of lock part must use, so that rotating operation button and setting dosage.Spacing possible in the structure of latched position is given to a great extent and only can match with applicable cases in restricted limit.

By the known a kind of syringe for giving medicine of document EP1326664B1.This syringe has knob, and turning knob sets injectable amount of liquid.Action button is only rotatable until the maximum dosage set.But, setting can be realized and inject being less than maximum dosage.

Summary of the invention

The object of the present invention is to provide such syringe, only the injecting fluid of the amount of reservation can be extruded from container and allow to mate desired applicable cases well wherein.

This object is realized by the syringe of the feature with claim 1.

In set syringe, action button is allowed to remain in the position corresponding to the unallowed amount of injecting fluid.Therefore do not need such buckling and locking device of design operation button, it guarantees that action button turns in two latched position automatically from the position between two latched position.If action button must rotate relatively very large angle (such as 90 ° or 180 °) between two amount settings allowed, then also obtain the centre position between the injection position of the permission of action button.If the position of the amount of the permission corresponding to injecting fluid of action button separates to obtain non-constant width, then only can be difficult to guarantee that buckling and locking device does not allow the centre position of action button.

In order to avoid the unallowed amount of injection injection liquid in syringe (its action button can be adjusted in the latched position be associated with the unallowed amount of injecting fluid), to be arranged in latched position lock operation button towards the movement on the direction of the nearside of longitudinal central axis line.Therefore can cancel such buckling and locking device, it guarantees that action button only to remain in injection position and can not be adjusted in latched position.Buckling and locking device for action button can match with the demand of operator and such as be configured to the kayser with can strongly feel, or is configured to the kayser with can seldom feel, it also allows the centre position of action button.Realize very high handling comfort thus and can guarantee simultaneously, not having the unallowed amount of injecting fluid to extrude from container.

" direction of nearside " represents such injection direction at this, namely towards the direction that direction or the injecting fluid of the accommodation section for injection needle extrude in the direction in which from container." direction in distally " represents contrary direction, namely away from the direction of injection needle.The end in the distally of syringe is the end back to injection needle.Utilize " nearside " represent syringe inject time towards the sidepiece thrusting position, and utilize " distally " represent back to the sidepiece thrusting position.

Advantageously, syringe has the first buckling and locking device, and it limits at least one injection position.This buckling and locking device so designs at this, that is, also can set the latched position be associated with the unallowed amount of injecting fluid.Advantageously, the first buckling and locking device has at least one latch elements, itself and detent profile combined effect.Advantageously, latch elements is entrapped in the kayser recess of detent profile in injection position.Latch elements offsets from detent profile in latched position.Be arranged to syringe and there is locking wheel exterior feature, its latch elements combined effect with skew and in the latched position of action button lock operation button relative to the movement on housing direction proximally.Can guarantee that action button only side proximally can move up in structurally predetermined injection position thus in a straightforward manner.

Advantageously, lock profile and be configured in action button place.Obtain compact structure thus.Advantageously, latch elements is arranged within action button.Action button can especially adjust between the primary importance and the second position of nearside in distally relative to latch elements.In the primary importance of action button, latch elements is arranged in the first section of the axis of action button, and it allows the skew of latch elements.Advantageously, latch elements is arranged in the second axial section in the second position of action button, the skew of its locking latch elements.

Advantageously, latch elements can offset outward about longitudinal central axis alignment, namely away from longitudinal central axis line.Advantageously, action button has the first internal diameter in a first section, and it is greater than the second internal diameter in the second section.Can realize in a straightforward manner thus locking profile.Advantageously, action button is towards springing (gefedert) on the direction of the primary importance in its distally.

Advantageously, syringe has shot sleeve, and it torsionally and can be connected with housing movably vertically.Shot sleeve is connected with dosage mechanism by the first threaded joints, and dosage mechanism is supported to rotatably relative to housing and irremovable vertically.Therefore, first threaded joints that rotates through of dosage mechanism causes moving axially of shot sleeve.Advantageously, syringe has the first attachment, and it sets up antitorque connection in the primary importance of action button between action button and dosage mechanism.Therefore, the rotation of action button makes dosage mechanism rotate, and by the first threaded joints, shot sleeve is moved in the axial direction thus.Advantageously, the antitorque connection between action button and dosage mechanism is set up by drivening piece, takes part to and to be torsionally connected with dosage mechanism and vertically regularly and be connected with shot sleeve rotationally.Therefore, if rotating operation button, drivening piece moves in the axial direction together with shot sleeve.

Advantageously, action button is torsionally connected with shot sleeve by the second attachment in its second position.Advantageously, the latch elements of the first buckling and locking device is a part for the second attachment, and detent profile is configured in shot sleeve place.Simply constructed thus.If action button is in the locked position, then latch elements locking action button move axially and the second attachment can not close.

Advantageously, syringe has dosing piston, and it to be torsionally connected with dosage mechanism by the second threaded joints with action button.Dosage mechanism rotates through the motion that the second threaded joints causes dosing piston, and it is for extruding injecting fluid.As long as action button to be in the primary importance in distally and be torsionally connected with dosing piston with dosage mechanism, the relative motion by the second threaded joints can not be realized between dosing piston and dosage mechanism, and injecting fluid can not extrude from container.Structurally guarantee thus only in the second position of action button, injecting fluid to be extruded.But, if action button is in injection position, be namely in the position be associated with the amount of the permission of injecting fluid, only at this moment can the second position of setting operation button.

If dosing piston is torsionally connected by overlapping overlapping piece (Teleskopteil) with action button, can realize the very little physical dimension of syringe, wherein, cover overlapping piece can move vertically relative in parts dosing piston and action button.Cover overlapping piece can move vertically relative to dosing piston and immovably remain on action button place vertically, or can be irremovable vertically and remain on action button place movably vertically relative to dosing piston.Because cover overlapping piece can relative in part dosing piston and action button vertically (namely on the direction of the longitudinal central axis line of syringe) mobile, so dosing piston and action button can be implemented shortlyer.Reduce the total length of syringe thus.

If dosing piston has guiding segments, and if cover overlapping piece has two guides bridge parts, it relatively and the sidepiece place of putting abuts in the guide surface place of guiding segments, then reaches simple structure.If action button has two equally guide bridge part, it extends through at least one accommodation section of cover overlapping piece, wherein, guide bridge part between the guiding bridge part of cover overlapping piece, abut in the guiding segments place of dosing piston in circumferential direction when complete pressing operation button, then obtain compact structure.Because the guiding bridge part of cover overlapping piece and action button adjoins in circumferential direction and puts, so obtain the less external diameter of syringe.

Can it is desirable that, also can feel for the user when extruding injecting fluid from container and maybe can hear, realize the extrusion of injecting fluid.Can arrange the second buckling and locking device, it works between dosage mechanism and housing for this reason.First buckling and locking device is only movable when setting the amount extruded of injecting fluid, and the second buckling and locking device is not only when setting the amount extruded of injecting fluid but also movable when extruding injecting fluid from container.Second buckling and locking device can be designed to very level and smooth at this, thus the power that can be applied by operator in the injection process for extruding liquid only improves a little due to the second buckling and locking device.Due to two buckling and locking device activities when setting the amount extruded of injecting fluid, so for can feeling very well operator and/or forming latched position with hearing.

Accompanying drawing explanation

Embodiments of the invention are set forth below by accompanying drawing.Wherein:

Fig. 1 shows the side view of syringe,

Fig. 2 shows the cross section along the line II-II in Fig. 1,

Fig. 3 shows the side view of the syringe of the Fig. 1 after the amount extruded of setting injecting fluid,

Fig. 4 shows the cross section along the line IV-IV in Fig. 3,

Fig. 5 shows the side view of the action button of syringe,

Fig. 6 shows the cross section along the line VI-VI in Fig. 5,

Fig. 7 shows the cross section along the line VII-VII in Fig. 5,

Fig. 8 shows the cross section along the line VIII-VIII in Fig. 6,

Fig. 9 shows the diagram of the perspectivity of the latch piece of syringe,

Figure 10 shows the view of latch piece on the direction of observation of the end of the nearside of syringe,

Figure 11 shows the side view of latch piece,

Figure 12 shows the cross section along the line XII-XII in Figure 11,

Figure 13 shows the side view of the shot sleeve of syringe,

Figure 14 shows the cross section along the line XIV-XIV in Figure 13,

Figure 15 shows the cross section along the line XV-XV in Figure 13,

Figure 16 shows the diagram of the perspectivity of the drivening piece of syringe,

Figure 17 shows the side view of the drivening piece of Figure 16,

Figure 18 shows the cross section along the line XVIII-XVIII in Figure 17,

Figure 19 shows the cross section along the line XIX-XIX in Figure 17,

Figure 20 shows the cross section along the line XX-XX in Figure 17,

Figure 21 shows the side view of the dosage mechanism of syringe,

Figure 22 shows the cross section along the line XXII-XXII in Figure 21,

Figure 23 shows the cross section along the line XXIII-XXIII in Figure 21,

Figure 24 shows the diagram of the perspectivity of the cover overlapping piece of syringe,

Figure 25 shows the side view of cover overlapping piece,

Figure 26 shows the side view on the direction of arrow XXVI in fig. 25,

Figure 27 shows the cross section along the line XXVII-XXVII in Figure 25,

Figure 28 shows the side view of dosing piston,

Figure 29 shows the cross section along the line XXIX-XXIX in Figure 28,

Figure 30 shows the cross section along the line XXX-XXX in Figure 28,

Figure 31 shows the side view of the housing component of syringe,

Figure 32 shows the side view of the housing component on the direction of the arrow XXXII in Figure 31,

Figure 33 shows the cross section along the line XXXIII-XXXIII in Figure 32,

Figure 34 shows the cross section along the line XXXIV-XXXIV in Figure 32,

Figure 35 shows the diagram of the amplification of the portion section XXXV of Figure 33,

Figure 36 shows the cross section along the line XXXVI-XXXVI in Figure 33,

Figure 37 shows the diagram of the amplification of the portion section XXXVII of Figure 33,

Figure 38 shows the cross section along the line XXXVIII-XXXVIII in Fig. 1 in the injection position of action button,

Figure 39 shows the cross section along the line XXXVIII-XXXVIII in Fig. 1 in the latched position of action button,

Figure 40 show after the amount extruded of setting injecting fluid and in second position action button being pressed into its nearside after the side view of syringe,

Figure 41 shows the cross section along the line XLI-XLI in Figure 40,

Figure 42 shows the cross section along the line XXXVIII-XXXVIII in Fig. 1 in an embodiment of syringe,

Figure 43 shows along the cross section of line XXXVIII-XXXVIII by another embodiment of syringe, and wherein, action button is in injection position.

Detailed description of the invention

Fig. 1 shows syringe 1, and it has housing 2.Housing 2 comprises the housing component 3 in distally and is fixed on the keeper 4 at sidepiece place of nearside of housing component in distally.Keeper 4 can be fixed on housing component 3 place in distally regularly, such as, be attached thereto by welding and connect.Such as, but keeper 4 also removably can remain on housing component 3 place, is screwed to housing component place, so that making it possible to realize replacing is arranged in container 5 in keeper 4, that show in fig. 2.Container 5 is containing injecting fluid.Keeper 4 forms the accommodation section being used for container 5.Keeper 4 has Connection Element in the end of its nearside, can be fixed with injection needle at this place.In this embodiment, Connection Element is standardized external screw thread 11, can screw on thereon with the injection needle of corresponding female thread.Replace external screw thread 11, other Connection Element also can be set in the end of the nearside of keeper 4.The injection needle of Connection Element and set type matches.Housing 2 can be laid seal closure 10 that be represented by dotted lines in FIG, that only partly show, and it surrounds keeper 4.Syringe 1 has longitudinal central axis line 6.Action button 8 is furnished with in the end in the distally of syringe 1.

As shown in Fig. 1, the housing component 3 in distally has form 7, and it is such as made up of transparent plastics.Form 7 can be used as independent component to manufacture or is made for one with the housing component 3 in two component injection forming methods and distally.Also can be arranged to that housing component 3 is complete together with form 7 to be made up of transparent plastics, except in the region of form 7, can hair side process, japanning be carried out to it or hide in other respects, make the region of only form 7 be transparent.

Fig. 2 show in more detail the structure of syringe 1.In the inside of container 5, be furnished with stopper 21, the dosing piston 103 of syringe abuts in stopper 21 place.Dosing piston 103 has the piston disc 20 abutting in stopper 21 place and the piston rod 19 be connected rotationally with piston disc 20.Piston rod 19 is torsionally connected with the guide portion 17 of action button 8 by cover overlapping piece 18.Demonstrate action button 8 to be in fig. 2 in the primary importance 95 in its distally.In the inside of action button 8, be furnished with compression spring 13, it loads on the direction of its primary importance 95 action button 8.Compression spring 13 utilizes first end be supported on side 105 place of action button 8 and utilize the second end to be supported on drivening piece 16 place.Drivening piece 16 is torsionally connected with action button 8 by the first attachment 23 in the primary importance 95 shown in fig. 2 of action button 8.Drivening piece 16 is arranged in the periphery place of the guide portion 17 of action button 8.Be extended with the dosage mechanism 15 of sleeve-shaped at the peripheral place of drivening piece 16, its be also called as graded tube and torsionally with can be connected with drivening piece 16 movably vertically.

Dosage mechanism 15 is surrounded by shot sleeve 14, and shot sleeve 14 also equally utilizes the end in its distally to reach in action button 8 with drivening piece 16.Dosage mechanism 15 is connected by the first threaded joints 33 with shot sleeve 14.Dosage mechanism 15 in the end of its nearside at support 32 place rotatably and immovably remain on housing component 3 place vertically.Shot sleeve 14 vertically (namely on the direction of longitudinal central axis line 6) is removable but torsionally remain in housing component 3.In action button 8, be furnished with latch piece 12, it to be torsionally bearing in action button 8 and to form the first buckling and locking device 29 with shot sleeve 14 combined effect with shot sleeve 14.Work in the end that second buckling and locking device 30 is adjacent to the nearside of dosage mechanism 15 between housing component 3 and the periphery of dosage mechanism 15.Buckling and locking device 29 and 30 extends in the cross section that this does not show in fig. 2, thus the reference number be associated only instruction card locking device 29 and 30 be arranged in where, and do not demonstrate its structure in detail.Latch piece 12 is a part for the second attachment 24, and the second attachment 24 is opened in the primary importance 95 of action button 8.Second attachment 24 makes the action button 8 be in its second position 96 (Figure 40) torsionally be connected with shot sleeve 14.

Fig. 2 demonstrates and to extrude after injecting fluid and syringe 1 before the amount that can extrude from container 5 when next time injects of setting injecting fluid.The position of shot sleeve 14 is limited by the first backstop 26 be formed between shot sleeve 14 and housing component 3.In order to set the amount to be injected of injecting fluid, rotating operation button 8.Action button 8 is torsionally connected with dosage mechanism 15 and with dosing piston 103 with drivening piece 16 in its primary importance 95.If action button 8 is rotated, then drivening piece 16 rotates together with dosage mechanism 15.First threaded joints 33 causes the relative motion of the axis between shot sleeve 14 and dosage mechanism 15.If action button 8 is rotated on the direction corresponding to the dosage set by improving, then shot sleeve 14 (namely on direction of arrow 25) on this direction is distally mobile.Due to the support 32 (it prevent the axially-movable of dosage mechanism 15) of dosage mechanism 15 in housing component 3, shot sleeve 14 shifts out from housing component 3 vertically and drives drivening piece 16 and action button 8 at this.When setting the amount extruded of injecting fluid, not only the first buckling and locking device 29 but also the activity of the second buckling and locking device 30, because not only action button 8 is rotated relative to shot sleeve 14, and dosage mechanism 15 rotates relative to housing component 3.

Fig. 3 and 4 shows the syringe 1 after the amount extruded setting injecting fluid.At this, set the maximum amount of the injecting fluid that can extrude.This position is limited by the second backstop 27, and it is formed between shot sleeve 14 and housing component 3 equally.

In order to extrude the amount set by injecting fluid, pressing operation button 8 on the direction of arrow 28 in the diagram.Therefore the first attachment 23 is opened, and the second attachment 24 closes.This also will be described below further.Compression spring 13 so designs, that is, before shot sleeve 14 is mobile in the axial direction, first make action button 8 move upward relative to shot sleeve 14 side proximally.When the second attachment 24 is closed, action button 8 is torsionally connected with shot sleeve 14.Because shot sleeve 14 side proximally moves upward in the direction of the arrow 28, dosage mechanism 15 rotates.Second threaded joints 34 is formed between dosage mechanism 15 and piston rod 19.Because piston rod 19 is torsionally connected with action button 8, so piston rod 19 can not rotate relative to shot sleeve 14 by cover overlapping piece 18.Therefore, dosage mechanism 15 causes the motion on piston rod 19 direction proximally relative to the rotation of shot sleeve 14, and piston rod 19 makes stopper 21 move in container 5 and cause and extrude injecting fluid from container 5.Because dosage mechanism 15 rotates relative to housing component 3, so the second buckling and locking device 30 is movable when extruding injecting fluid equally and is also the extrusion that operator acoustically indicates injecting fluid.Because the first attachment 23 is unclamped, so drivening piece 16 can rotate together with dosage mechanism 15 relative to action button 8.

Elaborate the component of syringe 1 below.Component is functional unit in this case, for simplicity describes its single-piece.But, in order to simplify the manufacture of part, can advantageously manufacture the element comprising multiple single-piece.

Fig. 5 to 8 show in more detail the structure of action button 8.As shown in Fig. 5 to 7, the guide portion 17 of action button 8 guides bridge part 36 to be formed by two, and it is orientation on the direction of the longitudinal central axis line 6 of syringe 1.Guide bridge part be configured with guide surface 37 towards longitudinal side place each other.

Action button 8 has the first section 38, and action button 8 has internal diameter a wherein.First direction distally, section 38 place is connected with the second section 39, and its internal diameter b is less than the internal diameter a in the first section 38.Step portion is formed, its locking profile 102 that also will further illustrate below being formed between two sections 38 and 39.On the direction of nearside, the first section 38 is limited, as also shown in Fig. 8 by radially inwardly outstanding maintenance section 43.Keep section 43 snap-on at edge 49 place shown in fig. 13 of shot sleeve 14 and therefore shot sleeve 14 be fixed on action button 8 place on the direction of longitudinal central axis line 6.

Action button 8 to have from side 105 adapter 40 that side proximally projects upwards therein, be furnished with external toothing portion 41 in its end.As illustrated in fig. 8, external toothing portion 41 comprises independent tooth outwardly, and its mode being one group with corresponding three teeth is arranged with adjoining, wherein, and corresponding formation interval between the tooth of single group.But external toothing portion 41 also can place extension at the whole outer of adapter 40.External toothing portion 41 is arranged in the first section 38.As also shown in Fig. 8, action button 8 has the guiding groove 42 stretched in a longitudinal direction, and it extends through the first section 38 and the second section 39.Be provided with two guiding grooves 42 toward each other and with putting arranged in the present embodiment.Guiding groove 42 is for holding the guiding bridge part 44 of latch piece 12 shown in Figure 9.Latch piece 12 has annulus 107.Two radially outstanding guiding bridge parts 44 are furnished with at the sidepiece place that it is put relatively.Guide bridge part 44 respective carrier two latch arm 45, it is in circumferential direction towards extension in the both direction of guiding bridge part 44 and with the very little pitch arrangement relative to annulus 107 at the sidepiece place of the nearside of annulus 107.Inwardly outstanding lock part 46 is configured with at the free end of latch arm 45.Fig. 7 to 12 also show this situation.Latch arm 45 with lock part 46 forms latch elements.As shown in Figure 10, latch arm 45 and lock part 46 are overlapping with annulus 107 in view of the direction of longitudinal central axis line 6, therefore do not protrude past annulus 107.Lock part 46 and detent profile 47 combined effect being configured in shot sleeve 14 place shown in fig. 13.Detent profile 47 is limited by the first edge 48 in the end in its distally, and keeps the second edge 49 after section 43 to limit in the end of its nearside by snapping into.As also shown in Fig. 2 and Fig. 4, first edge 48 in distally to reach between the annulus 107 of latch piece 12 and latch arm 45 and therefore latch piece 12 is fixed on shot sleeve 14 place on the direction of longitudinal central axis line 6.

As shown in Figure 13, shot sleeve 14 has convex shoulder 97, and the external diameter direction proximally of this place's shot sleeve 14 becomes large.As shown in Fig. 2, between the end of the nearside of action button 8 and convex shoulder 97, form spacing c.On direction proximally during pressing operation button 8, convex shoulder 97 forms the backstop being used for action button 8.Shot sleeve 14 has window portion 31, and mark arrow 54 residence of the dosage set by display is stretched in window portion.Shot sleeve 14 has the covering part 56 be arranged to close to window portion 31.Covering part 56 for covering dosage mechanism, thus only can see the labelling be arranged in window portion 31 of dosage mechanism 15 by form 7.Covering part 56 extend in the position shown in fig 1 and 2 of syringe 1 until keeper 4 region in.As shown in Fig. 1, be furnished with tongue-like part 9 at housing component 3 place in distally, it extends and covers covering part 56 on keeper 4.

As shown in Figure 14, shot sleeve 14 is similar to has inwardly outstanding kayser protuberance 53 on the height of convex shoulder 97.Be provided with four the kayser protuberances 53 being evenly distributed in surrounding in the present embodiment.Kayser protuberance 53 kayser is at drivening piece 16 place, and kayser is at groove 59 place of the display in Figure 16 and 17 of drivening piece 16 or rather, and forms the support 35 for drivening piece 16 shown in the diagram.Drivening piece 16 is irremovable vertically but be rotatably supported in shot sleeve 14 place by reaching kayser protuberance 53 in groove 59.

As also shown in Figure 14, shot sleeve 14 has female thread passage (Innengewindegang) 55, and it is configured to the end of the nearside being adjacent to shot sleeve 14.Female thread passage 55 interrupts in the region of kayser protuberance 53, thus shot sleeve 14 can manufacture by injection moulding method.Female thread passage 55 forms the first threaded joints 33 with the external screw thread 62 shown in Figure 21 and 22 of dosage mechanism 15.

As shown in Figure 14 and 15, shot sleeve 14 has cannelure 50 at its sidepiece place back to window portion 31.Cannelure 50 is configured in the region of thickening part 89 of shot sleeve 14.The protuberance 90 of housing component 3 reaches (Figure 33 and 37) in cannelure 50.Protuberance 90 has the arris 91 of nearside, and the end 52 of the nearside of itself and cannelure 50 forms the second backstop 27 shown in the diagram.In addition, protuberance 90 has the arris 92 in distally, and the end 51 in the distally of itself and cannelure 50 forms the first backstop 26 (Fig. 2).As shown in Figure 36, protuberance 90 is arranged in cannelure 88.Cannelure 88 so structure makes the thickening part 89 that can hold shot sleeve 14.Because groove 50 and protuberance 90 are medially arranged between shot sleeve 14 and housing component 3 in radial directions about longitudinal central axis line 6, so obtain the very little external diameter of whole assembly.

Figure 16 to 20 show in more detail drivening piece 16.Drivening piece 16 has internal messing portion 57 in the end in its distally, itself and external toothing portion 41 combined effect (Fig. 8) at adapter 40 place of action button 8.Be adjacent to internal messing portion 57 and be furnished with recess 58 at the sidepiece place of the nearside in internal messing portion 57.If action button 8 moves relative to drivening piece 16 by direction proximally, then the external toothing portion 41 of action button 8 reaches the region of recess 58 from the region in the internal messing portion 57 of drivening piece 16, unclamps the antitorque connection between action button 8 and drivening piece 16 thus.Illustrates in further detail the design of internal messing portion 57 and recess 58 in figs. 18 and 19.

Drivening piece 16 has edge 106, and it is limited in the groove 59 at the sidepiece place of nearside.As shown in Fig. 2, edge 106 check strap moving part 16 is inserted into the degree of depth in dosage mechanism 15.Drivening piece 16 is configured to sleeve-shaped at the section place that it is connected to edge 106 place and has four cannelures 60 being evenly distributed in peripheral place at its peripheral place, and it also has trapezoidal cross section as shown in Figure 20.As shown in Figure 22 and 23, dosage mechanism 15 has corresponding radially inwardly outstanding longitudinal bridge part 68.Longitudinal bridge part 68 to reach in cannelure 60 and therefore makes drivening piece 16 torsionally be connected with dosage mechanism 15.

Figure 21 to 23 show in more detail the design of dosage mechanism 15.Dosage mechanism 15 is configured to sleeve-shaped and has external screw thread 62 coefficient with the female thread passage 55 of shot sleeve 14 at its peripheral place.Dosage mechanism 15 is printed on scale 61, and its value rises from the end distally, end of the nearside of dosage mechanism 15.Show schematically show scale 61 in figure 21, wherein, only show even number.Odd number can illustrate advantageous by lines between numbers.Do not show in lines diagram in figure 21.In the present embodiment, the often circle of dosage mechanism 15 is provided with 20 desired locations.The dosage set by action button 8 is larger, and shot sleeve 14 moves up far away relative to side distally of dosage mechanism 15.When mobile, the window portion 31 of shot sleeve 14 moves equally, thus corresponding to the amount set by injecting fluid scale 61 shown by numeral increase.Covering part 56 covers the value be not arranged in window portion 31 of scale 61, thus avoids several values demonstrating scale 61 in the form 7 of housing 2.

Dosage mechanism 15 has detent profile 63 in the end of its nearside, and it is a part (Fig. 2) for the second buckling and locking device 30.In addition, dosage mechanism 15 has four radially outstanding kayser hooks 64 in the end of its nearside, its be support 32 a part and after being stuck in the click-lock edge 85 shown in Figure 35 of housing component 3.Thus dosage mechanism 15 is fixed on housing component 3 place in the axial direction.In addition, dosage mechanism 15 has the inside adapter 65 of column in the end of its nearside, it has female thread 66.External screw thread 76 combined effect shown in Figure 28 of female thread 66 and dosing piston 103 and therewith form the second threaded joints 34.As also shown in Figure 22, dosage mechanism 15 has inwardly outstanding kayser hook 67, and it is for fixing the cover overlapping piece 18 shown in fig. 24 vertically.For this reason, kayser hook 67 is stuck in the groove 69 shown in fig. 24 of cover overlapping piece 18.

Cover overlapping piece 18 is show in more detail in Figure 24 to 27.Cover overlapping piece 18 has the thromboembolism 70 of nearside, and it has square opening 71.Cover overlapping piece 18 has annulus 72 in the end in its distally.Between thromboembolism 70 and annulus 72, be extended with two guide bridge part 73, it is guide surface 74 towards surface construction each other.Guiding, the sidepiece place radially pointed to of bridge part 73 is corresponding is provided with the reinforcing bridge part 75 stretched in a longitudinal direction.As shown in Figure 27, bridge part 73 is guided to be configured to oblique at its outer rim place.Accommodation section 104 is configured with in annulus 72.

Figure 28 to 30 show in more detail the design of dosing piston 103.Dosing piston 103 has guiding segments 77 in its end back to the distally of piston disc 20.As shown in Figure 30, guiding segments 77 has (especially foursquare) cross section of rectangle.In guiding segments 77, place is configured with put two the first guide surfaces 78 toward each other, and the guide surface 37 of the guiding bridge part 36 of action button 8 can abut in the first guide surface 78 place.Other two guide surfaces 79 put toward each other abut in guide surface 74 place of cover overlapping piece 18.Accommodation section 104 in cover overlapping piece 18 so constructs to such an extent as to can be inserted through the guiding bridge part 36 being arranged in guide surface 78 place of guiding segments 77 and action button 8.In the assembly shown in fig. 2 of syringe 1 after injection, shot sleeve 14 is arranged in the position of its nearside.In this position, the guide portion 17 of action button 8 extends through accommodation section 104.If set maximum dosage, as shown in Fig. 4, then guide portion 17 has spacing relative to piston rod 19.Spacing is by overlapping overlapping piece 18 bridge joint, and it is not only with the guiding segments 77 of dosing piston 103 but also be torsionally connected with guide portion 17.Can guide portion 17 opposed formations at action button 8 place be obtained very short thus, thus in the state shown in fig 1 and 2 (namely after completing the injection) obtain the very little length of syringe 1.

Figure 31 to 37 show in more detail the design of housing component 3.As shown in Figure 33 and 37, housing component 3 has wall 83, and it is perpendicular to longitudinal central axis line 6 and have opening 87.Opening 87 by be molded in wall 83, inner sleeve 86 that side distally projects upwards limits.The adapter 65 of the nearside of dosage mechanism 15 is stretched in inner sleeve 86.Radially outside inner sleeve 86, be furnished with sleeve segment 84, the click-lock edge 85 that its carrying side distally projects upwards, the kayser hook 64 of dosage mechanism 15 is hooked in click-lock edge 85 place.

Be adjacent to wall 83 (the sidepiece place in the distally of wall 83) and demonstrate in Figure 34 two latch arm 80 are molded in housing component 3 place.Latch arm 80 remains on housing component 3 place by keeping bridge part 82 and has lock part 81 at its free end.Lock part 81 is approximate in this embodiment toward each other and with putting to be arranged and snaps in the detent profile 63 at place of dosage mechanism 15.Lock part 81 forms the second buckling and locking device 30 together with detent profile 63.

Figure 38 and Figure 39 shows the cross section by action button 8.In Figure 38, demonstrate action button 8 be in injection position 100, and be in the locked position in 101 in Figure 39.In injection position 100, set the dosage of the permission of injecting fluid, and do not allow the amount set in Figure 39 of injecting fluid.The amount of the permission of injecting fluid is the amount of subscribing in design, and it is corresponding to the dosage desired by the medicine that syringe can be utilized to give.Some amounts can be allowed, such as single dose many by dosage at this.The unallowed amount of injecting fluid is such amount, that is, the amount that should not give, such as, because the effectiveness of medicine only confirms it is the injecting fluid of amount for allowing, or because should avoid independently setting dosage by patient and should avoid giving the medicine of the amount not accurately illustrated.

As shown in Figure 38, in the detent profile 47 at shot sleeve 14 place, there is protrusion 93 and kayser recess 94.The lock part 46 of latch piece 12 is corresponding to be arranged in kayser recess 94.Therefore lock part 46 radially inwardly swings.Latch arm 45 is overlapping relative to the annulus 107 do not shown in Figure 38.The external toothing portion 41 that Figure 38 also demonstrates action button 8 is arranged in the internal messing portion 57 of drivening piece 16.In Figure 38, external toothing portion 41 and internal messing portion 57 are arranged on identical height, but are arranged under cross section.Between drivening piece 16 and action button 8, antitorque connection is set up by external toothing portion 41 and internal messing portion 57.

Action button 8 can from the injection position 100 shown among Figure 38 on the direction of the arrow 28 shown in the diagram direction be proximally pressed in the second position 96 of the nearside of display in Figure 40 and 41.Latch piece 12 thus with lock part 46 reaches in the second section 39 shown in Fig. 6 and Figure 41, and it has less diameter b than the section 38 shown in Figure 38.The external diameter of latch piece 12 in the region of latch arm 45 is enough little when lock part 46 is arranged in kayser recess 94, thus action button 8 side proximally can be made to move up and cause injection.Latch arm no longer can radially offset in the second position 96 of action button 8, because the cylindrical outer wall retardation motion of the second section 39.Action button 8 is made torsionally to be connected with shot sleeve by latch piece 12 thus.The second attachment 24 formed by latch piece 12 closes.When action button being pressed in its second position 96, moving upward in the side proximally of external toothing portion 41 at action button 8 place and reaching the region of recess 58 from the region in the internal messing portion 57 of drivening piece 16.Therefore the first attachment 2 is opened and drivening piece can rotate relative to action button 8.

Figure 39 demonstrates action button 8 and is in the locked position in 101.In this position, lock part 46 is in the region of the protrusion 93 of the detent profile 47 of shot sleeve 14.Therefore latch arm 45 radially offsets.Internal diameter in the second section 39 shows with dotted line in Figure 39.As shown in the figure, dotted line is crossing with latch arm 45.Therefore the motion on action button 8 direction proximally can not realize.The locking profile 102 shown in figure 6 abuts in latch arm 45 place and therefore prevents the movement on action button 8 direction proximally.Can not realize causing injection or injecting fluid from the extrusion of container 5 thus in the latched position 101 of action button 8.

As shown in the figure, latch arm 45 designs very narrow.Therefore the power inwardly applied in radial directions by latch arm 45 is very little.The power being applied to detent profile 47 by latch arm 45 is too little, so that action button 8 turns in injection position 100.Thus can in shown syringe 1 latched position 101 of setting operation button.Locking profile 102 prevents to extrude injecting fluid from container 5 in the latched position 101 of action button 8.

Figure 42 and 43 shows the cross section corresponding to Figure 38 by embodiment.In Figure 42, detent profile 98 is arranged on shot sleeve 14 place, and it has kayser recess 94, is formed between its protrusion 108.In this embodiment, the corresponding circumferential angle extending through about 18 ° of protrusion 108.The external diameter of shot sleeve 14 is constant at protrusion 108 place.In the region of protrusion 108, latch arm 45 can not inwardly springing.Equally, in this region power can not be applied in detent profile 98 in circumferential direction by latch arm 45.For the design shown in Figure 42 of detent profile 98, even if when very firmly designing latch arm 45, still action button 8 can be adjusted in multiple latched position 101.For the embodiment shown in Figure 42, total can realize ten latched position, and is being provided with total 20 positions at peripheral place according in the embodiment of Figure 38 to 41.

Show detent profile 99 in the embodiment shown in Figure 43, be only provided with two injection positions wherein.The angle of corresponding existence 180 ° between injection position, the i.e. rotation of the half of action button 8.In order to also reach latched position between injection position, corresponding adjoining, is furnished with six kayser recesses 94, is extended with protrusion 110 in-between.Protrusion 110 extends through different circumferential angles.But, also can be arranged to protrusion 110 and extend through identical circumferential angle.The arrangement of protrusion 110 and kayser recess 94 is so selected, and that is, only in two positions of action button 8 (namely in shown position and in the position of rotation 180 °), all lock parts 46 are arranged in kayser recess 94.In other all positions, at least one lock part 46 radially offsets from protrusion 110, thus action button 8 side is proximally moved upwards up in the second position 96 shown in Figure 40 can not realize.In addition, kayser recess 94 is so arranged, that is, when action button 8 rotates 18 ° at every turn, at least one lock part 46 is stuck in kayser recess 94, thus obtains 20 appreciable latched position.In the injection position 100 shown in Figure 43, can adjust in the axial direction relative to drivening piece 16 and shot sleeve 14 action button 8, that is adjust in the second position 96 of the nearside shown among Figure 40 from the primary importance 95 in the distally shown in FIG.Keep section 43 in the position 96 of nearside, abut in convex shoulder 97 place of shot sleeve 14.

The arrangement of kayser recess and protrusion can at random match with corresponding applicable cases.Also can be arranged in does not provide latched position between injection position 100 and unique appreciable kayser produces between dosage mechanism 15 and housing component 3 due to the second buckling and locking device 30.

Claims

1. a syringe, with: housing (2), is configured with the accommodation section for the container (5) with injecting fluid wherein, action button (8), its rotatably for setting injecting fluid the amount that can extrude from described container (5) and rotate time move relative to described housing (2) on the direction in the distally of described syringe (1) on the direction of the longitudinal central axis line (6) of described syringe (1), wherein, in order to extrude injecting fluid from described container (5), described action button (8) moves up towards the side of the nearside of described syringe (1) on the direction of longitudinal central axis line (6), it is characterized in that, described syringe (1) has shot sleeve (14), it torsionally and can be connected with described housing (2) movably vertically, wherein, described shot sleeve (14) is connected with dosage mechanism (15) by the first threaded joints (33), and wherein, described dosage mechanism (15) is supported to rotatably relative to described housing (2) and irremovable vertically, and wherein, described syringe (1) has dosing piston (103), it is torsionally connected with described action button (8) and is connected with described dosage mechanism (15) by the second threaded joints (34), wherein, stopper (21) is furnished with in the inside of described container (5), described dosing piston (103) abuts in stopper (21) place, wherein, described dosing piston (103) has the piston disc (20) abutting in described stopper (21) place and the piston rod (19) be connected rotationally with described piston disc (20),

It is characterized in that, (19 are torsionally connected with the guide portion (17) of described action button (8) by cover overlapping piece (18) described piston rod, wherein, described cover overlapping piece (18) is not only with the guiding segments (77) of described dosing piston (103) but also be torsionally connected with the guide portion (17) of described action button (8), wherein, if set maximum dosage, the guide portion (17) of described action button (8) has spacing relative to described piston rod (19), and wherein, this spacing is by described cover overlapping piece (18) bridge joint.

2. syringe according to claim 1, it is characterized in that, described dosing piston (103) has guiding segments (77), wherein, described cover overlapping piece (18) has two and guides bridge part (73), and it is relatively and the sidepiece place of putting abuts in guide surface (78) place of described guiding segments (77).

3. syringe according to claim 2, it is characterized in that, described guiding segments (77) has the cross section of rectangle, and described guiding segments (77) has toward each other and put two other guide surfaces (78), and it abuts in guide surface (74) place of described cover overlapping piece (18).

4. the syringe according to Claims 2 or 3, it is characterized in that, described cover overlapping piece (18) has annulus (72) in the end in its distally, accommodation section (104) is configured with in annulus (72), wherein, described accommodation section (104) so constructs, that is, the guiding bridge part (37) being arranged in described guide surface (78) place of described guiding segments (77) and described action button (8) can be inserted through.

5. syringe according to claim 1, it is characterized in that, described action button (8) can adjust at least one injection position (100) and at least one latched position (101) when setting the amount extruded of injecting fluid, the amount of the permission of setting injecting fluid in injection position (100), and in latched position (101), set the unallowed amount of injecting fluid, wherein, described action button (8) can in injection position (100) on the direction of longitudinal central axis line (6) side proximally move up, and wherein, in the latched position (101) of described action button (8), the movement of described action button (8) on the direction of longitudinal central axis line (6) on direction is proximally locked.

6. syringe according to claim 5, is characterized in that, described syringe (1) has the first buckling and locking device (29), and it limits at least one injection position (100).

7. syringe according to claim 6, it is characterized in that, described first buckling and locking device (29) has at least one latch elements, itself and detent profile (47) combined effect, wherein, described latch elements to snap in the kayser recess (94) of described detent profile (47) and offsets from described detent profile (47) in latched position (101) in injection position (100), wherein, described syringe (1) has locking profile (102), its described latch elements combined effect with skew and lock described action button (8) in latched position (101) in described action button (8) relative to the movement on described housing (2) direction proximally.

8. syringe according to claim 7, is characterized in that, described locking profile (102) is configured in described action button (8) place.

9. syringe according to claim 7, it is characterized in that, described action button (8) can adjust between the primary importance (95) and the second position (96) of nearside in distally relative to described latch elements, wherein, described latch elements is arranged in first section (38) of the axis of described action button (8) in the primary importance (95) of described action button (8), it allows the skew of described latch elements, and wherein, described latch elements is arranged in axial the second section (39) in the second position (96), it locks the skew of described latch elements.

10. syringe according to claim 9, it is characterized in that, described latch elements outwards can offset about longitudinal central axis line (6), and described action button (8) has the first internal diameter (a) of the second internal diameter (b) be greater than in the second section (39) in the first section (38).

11. syringes according to claim 9, is characterized in that, described action button (8) is towards springing on the direction of the primary importance in its distally.

12. syringes according to claim 1, it is characterized in that, described syringe has the first attachment (23), and its primary importance in described action button (8) sets up antitorque connection in (95) between described action button (8) and described dosage mechanism (15).

13. syringes according to claim 12, it is characterized in that, antitorque connection between action button (8) and dosage mechanism (15) is realized by drivening piece (16), and it is torsionally connected with described dosage mechanism (15) and is connected with described shot sleeve (14) regularly with rotationally vertically.

14. syringes according to claim 1, is characterized in that, described action button (8) is torsionally connected with described shot sleeve (14) by the second attachment (24) in its second position (96).

15. syringes according to claim 14, it is characterized in that, the latch elements of described first buckling and locking device (29) is a part for described second attachment (24), and the detent profile (47) of described first buckling and locking device (29) is configured in described shot sleeve (14) place.

16. syringes according to claim 1, is characterized in that, the second buckling and locking device (30) works between described dosage mechanism (15) and described housing (2).

17. syringes according to claim 16, it is characterized in that, described second buckling and locking device (30) has at least one latch arm (80) being arranged in described housing (2) place, itself and detent profile (63) combined effect at the periphery place of described dosage mechanism (15).